Finding the Fourth Proportional to 123,756.15, 185,604.46 and 57,132.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,756.15 : 185,604.46 = 57,132.31 : x
2. Step 2: Convert to fraction form
   123,756.15/185,604.46 = 57,132.31/x
3. Step 3: Cross multiply
   123,756.15x = 185,604.46 × 57,132.31
4. Step 4: Simplify right side
   123,756.15x = 10,604,011,546.10
5. Step 5: Solve for x
   x = 10,604,011,546.10/123,756.15
6. Step 6: Final answer
   x = 85,684.72